However Visual Studio 2012 RTM does not include the Office 2013 and SharePoint 2013 Developer Tools Preview with it. So, to install the preview tools, you need to grab the Microsoft Web Platform Installer

Download the web platform installer, search for SharePoint and you have it there:

The specified steps did not work for me. When I searched for "SharePoint" in the Web Platform Installer 4.0, what it displayed was "Microsoft Office Developer Tools for Visual Studio 2012 RC - Preview". When I tried installing it, the error message is